
function (hello){
echo "hello,world"
}
# New comment

function s1_hello(){
echo "hello,world!"
}
function s2_tell_who_i_am(){
whoami
}
function s3_which_distro_do_i_use(){
if[-f/etc/os-release];then
source /etc/os-release
echo"NAME=\"$NAME\""
else
	echo "无法确定发行版"
fi
}
function s4_view_my_cpu_arch(){
uname -m
}
function s5_show_first_scsi_disk_size(){
	local disk_disk_size_bytes=$(lsblk -b|
grep -E'^sda'| awk'{print $4}')
	if[ -n "$disk_size_bytes"];then
		local disk-size_gb=$(echo
		"scale=0;$disk_size_bytes/
		1000000000"|bc)
		ech "$disk_size_gb"
	else
		echo"未找到第一块SCSL硬盘"
	fi
}
function s6_show_main_memory_size_
in_megabytes(){
free _m | grep "Menm:"| awk '{print $2}'
}

